Sophisticated Assessment of Disease Burden in Patients With Fabry Disease
Fabry DiseaseTo detect early signs of cardiac and metabolic alterations as well as to evaluate the progression of cardiac and metabolic impairments in mildly affected patients with Fabry Disease using high sensitive diagnostic methods.
Anderson-Fabry Disease in Chronic Kidney Disease Patients Not on Renal Replacement Therapy
Focus of Study: Prevalence of Fabry Disease in CKD PopulationAnderson-Fabry disease is a rare X-linked lysosomal storage disorder due to the deficiency of alfa-galactosidase A (AGAL). The subsequent accumulation of glycosphingolipids may lead to to cardiac, renal, and central nervous system impairment as well as premature death. Recently published studies suggest that the true incidence of the disease may be underestimated in certain risk groups, e.g. in patients with chronic kidney disease (CKD). Therefore, the investigators initiated a multicenter case-finding study in Austria by screening patients with chronic kidney disease not yet on renal replacement therapy. Molecular isoforms of globotriaosylceramide (Gb3), characterized by different chain lengths of their N-acyl residues, will be determined in a urine sample. Characteristic parameters, including the ratio of C24/C18 isoforms will be used for identifying patients liable to have the disease. A positive result will be confirmed by biochemical and genetic testing. A sample size of 5.000 chronic kidney disease patients is envisaged allowing for detection of 1 to 25 patients with Anderson-Fabry disease.
Establishment of Biomarkers for Fabry Disease
Fabry DiseaseFabry disease, an x-linked recessive lysosomal storage disease (LSD) is commonly recognized as a cause of renal failure in involved men and more recently recognized in women too. Women are involved in significant numbers and with complications, as are men, of vascular disease. This manifests as unexpected strokes in young adults. We have morphologic evidence that storage-endotheliopathy induced microvascular disease is the cause of cardiopathy and of cryptogenic strokes, and that storage endotheliopathy starts in early life, probably before birth. Based on our earlier work with other endotheliopathies such as diabetes mellitus, Susac syndrome, and hypertension, we will find and study patients using unique methods, neuro-retinal fluorescein angiography (NRFA), that we have developed for this purpose. These methods include NRFA to demonstrate capillary perfusion in the optic nerve head and retinal quadrants. We anticipate, based on our earlier experience with other endotheliopathies, that we will show more vascular pathology earlier than previously reported. Using epidemiologic and genetic tools we will find more patients than previously known or expected. It will offer opportunity for earlier diagnosis, prognosis, and response to enzyme replacement therapy. We hypothesize that Fabry disease is a poorly recognized and poorly characterized cause of microvascular disease and cryptogenic strokes in young women and men. Neuroretinal capillary perfusion abnormalities in Fabry disease will be predictive of equivalent vascular disease in kidney, heart, brain and other organs, and further that it will be responsive to change induced by enzyme replacement therapy treatment.
Fabry Screening Study
Fabry DiseaseTo determine if patients with a deficiency of alpha-galactosidase A are at-risk for cardiac complications that commonly occur in the general population
Fabry Patient's Experience Of PegunigaLsidasE Alfa Monthly Infusion
Fabry DiseasePegunigalsidase alfa (PRX-102) is a long-term enzyme replacement therapy design for the treatment of patients with Fabry disease. Although in the clinical development program patient-reported outcomes and clinician-reported outcomes have been included, this may not allow for a sufficiently accurate assessment of the quality of life in patients with Fabry Disease treated with pegunigalsidase alfa. This study will collect the patient experience on the pegunigalsidase alfa treatment administered intravenously every 4 weeks in the BRIGHT-F51 clinical study (NCT03614234).
Substudy (NCT04456582): Noninvasive Assessment of Myocardial Stiffness by 2D-SWE Ultrasound Technique...
Fabry DiseaseAmyloidosisIntroduction: Heart failure with preserved systolic function encompasses several different diseases, but which have diastolic dysfunction and its components in common: myocardial stiffness and altered relaxation. Myocardial stiffness represents an important parameter for diagnosis and prognosis, but only changes in relaxation are evaluated in clinical practice. Cardiac elastography has been proposed as a diagnostic modality for noninvasive assessment of myocardial stiffness. Objective: The aim of our study is to investigate the potential of myocardial elastography by shear waves to assess myocardial stiffness by non-invasively quantifying diastolic myocardial elasticity (EMD) in Fabry disease (DF) and cardiac amyloidosis (AC ) in the ATTRh form and correlate with other complementary imaging and laboratory tests (electrocardiogram, 2D echocardiogram, troponin and BNP) and with a 6-minute walk test and quality of life questionnaires. Material and methods: 60 adults will be prospectively included: 20 patients with Fabry disease, 40 patients with hRTRT (20 with cardiac involvement) and 20 patients as a control group. Echocardiography, electrocardiogram and laboratory evaluations will be performed. The elastocardiographic assessment of myocardial stiffness will be performed in ultrasound equipment (Canon, Aplio i800) using a multifrequency convex transducer, under specific adjustment of the equipment to perform myocardial elastography.
Detection of Fabry Disease in Chronic Renal Failure Patients in Area Provence - Alpes - Côte d'Azur...
Fabry DiseaseFabry disease is a rare genetic disease characterized by an enzyme deficiency, called alpha-galactosidase A, which normally breaks down a lipid, is missing or does not function properly. As a result, the lipid accumulates in the body, this leads to multisystem impairment, including progressive renal failure. Several studies have focused on the detection of this disease in end-stage renal failure patients, transplant or hemodialysis. This study aims to diagnose the Fabry patients earlier, among men aged 18-60 years with a glomerular filtration rate estimated by MDRD between 60 and 15 ml/min/1, 73m2, or between 90 and 60 ml/min/1, 73m2 in association with proteinuria greater than 0.3 g / g or creatinine level greater than 0,5 g/l. This screening will be conducted by a blood test to measure the level of alpha-galactosidase A activity by micromethod from samples taken from blood spots on filter paper. If this assay was positive, confirmation of diagnosis of Fabry disease will done the standard method: macrodosage of leukocytic alpha-galactosidase A activity. This multicenter prospective study, openly contacted in medical practice, with patient follow-up corresponding to the management of renal insufficiency, will be offered to all departments of nephrology and dialysis for adults in the Provence - Alpes - Côte d'Azur. The objective of this study is to assess the prevalence of Fabry disease in the target population and to identify previously undiagnosed patients, enabling them to benefit from appropriate management of their disease, including whether need enzyme replacement therapy.
Fabry and Stroke Epidemiological Protocol (FASEP): Risk Factors In Ischemic Stroke Patients With...
Cerebrovascular AccidentStroke2 moreMore than one million people in Europe suffer from a stroke every day. Normally older people have a stroke, but also a significant number of younger people between 18 and 55 years. Usually, these can only be explained for a minority by the classical risk factors such as diabetes, overweight and high blood pressure. New studies indicate that in about 1 - 2 % of the younger stroke patients the etiology can be an undiagnosed genetic disease, e.g. Fabry disease. Fabry disease is a lysosomal storage disorder known to cause vasculopathy. The purpose of this study is to determine in a large number of young stroke patients, how many strokes were caused by Fabry disease and what risk factors might be able to predict this disease.
Prevalence and Characteristics of Fabry Disease (FD) in Patients With Stroke or Small Fiber Neuropathy...
Fabry DiseaseFD is pan-ethnic. Its reported annual incidence of 1 in 100,000 may underestimate the true prevalence of the disease. Indeed, recently, in addition with affected males FD developing a "classic" phenotype, " cardiac variant " and " renal variant " have been reported for FD patients with predominant or exclusive cardiac or renal involvement. " Neurologic variant " could exist. Nervous system can be affect by FD leading to cerebrovascular diseases (ischemic or haemorrhagic strokes, TIA (Transient Ischemic Attacks) or peripheral neuropathy (acroparesthesias and pain). Aims will be to determine the prevalence of Fabry disease in patients with stroke or small fiber neuropathy, and their characteristics
Fabry Disease Screening in ESRD Patients in West of France
ESRDScreening of Fabry disease in end-stage renal disease (ESRD) patients on dialysis or transplant in west of France.